Refrigerating apparatus



June 4, 1929. T. F. RAlNsl-'ORD ET AL REFRIGERATING APPARATUS 2 Sheets-Sheet Filed May 18. 1925 ATTORNEYJ' Junev 4, 1929*. T F. RNNsFRD AL 1,715,386

REFRIGERATING APPARATUS Filed May 18, 19,25 2 Sheets-Sheet 2 A TTORNEY5 vPatented June 4, 1929.

muren err-ica THOMAS F. RAINSFORD AND THOMAS C. WHITEHEAD, OF DETROIT, MICHIGAN, .AS- SIGNORS TO THOMAS C. WHITEHEAD, F DETROIT, MICHIGAN.

BEFBIGERATING APPARATUS.

Application led May 18,

This invention relates to refrigerating apparatus and more particularly to improvements in certain parts thereof.

The invention has particular reference to improvements in the base or main support upon which the several parts of the apparatus are mounted whereby additional compactness and utility are obtained, the construction offering furtherl possibilities, such as cheapness in manufacture, durability and convenience in assembling. The invention further contemplates the association with a portion ofthe base, of a casing constitutingv a crank case, adapted to be secured to an upstanding portion of said base and accurately aligned therewith whereby bearings may be provided in said casingfand base part for supporting the crank shaft ofthe apparatus in axial alignment with the shaft of the motor adaptdd to be supported upon the pedestal portion of said base.

' The inventionhas as a further object, to simplify, render more efficient, and improve generally arrangements of this general character, and the means for attaining all of the aforesaid objects as -well as other advantages, and the details of one illustrative example of the invention will be made more apparent as this description proceeds, especially `when considered in connection with the accompanying drawings, wherein Figure 1 is a view partly'in vertical section and partly in elevation of an apparatus constructed in accordance with our invention,

Figure 2 is the top plan of the structure illustrated in Figure 1,

Figure 3 is a fragmentary sectional view taken substantially on the plane indicated by the line `3-,3 in Figure 1, and

Figure 4-is an vend elevation of the apparatus.

ReferringI now particularly to the drawings wherein like reference characters indicate like parts it will be noted that there is illustrated a vbase 10 upon which is mounted a radiator 11 which comprises vertical cooling tubes 12 Y and horizontal heat radiating or lin plates 13, these cooling tubes connecting at their upper ends with an upper header` 14. Associatedv 5 with the radiator is a cooling fan 15 mounted 1925. Serial No. 31,149.

lform or pedestal 19 having a horlzontal surface parallel with but elevated with reference to the intermediate portion 2O ofthe base. The base is further provided with a plurality of feet or supportingl legs 21, arranged at eachvend as shown. The motor 18 is adapted to be supported upon pedestal 19 and secured in place, for instance, by bolts 22 threaded 1nto pedestal support 19.

Formed integrally withthe `intermediate portion 20 of the base is a hollow compartment or chamber 23`constituting a header `for radiator 11. For this purpose the lower wall of the chamber is provided with a threaded aperture 24 b means of which a conduit 25 is connected t ereto, whereby the refrigerating fluid may be conducted to the evaporator. The upper wall of the chamber 23 is formed with apertures 26 whereby cooling tubes 12 of the radiator may have communication with header 23. The apertures 26 are preferably surrounded by upstanding bosses 27 the apertures 26 being bridged by plates 28 through which tubes 12 ,extend and to which said tubes areanchored. Plates 28 rest upon bosses 27 and are rigidly secured in place bybolts 29 which pass upwardl through header 23 and clearly shownin Figure 1. The projecting portion 32 of the base is formed with laterally extending ribs 32 at the vertical edges'there- 0f which Strengthen and reinforce proyectlon 32, these ribs merging into legs 21 at the bottom thereof. This upstanding projection is correctly supported and held in parallel aliwnment with said base.

ne face of projection 32 is formed with a bearing surface 35 and an immediately adjacent. continuous shoulder or collar 36. Surface 35 and collar 36 are adapted to be engaged by the periphery 37 of a casing 38 constituting a lcrank case into which shaft 16 extends, as shown. clearly in Figure 1. The surface 35 and collar 36 correspond to the peripheral contour of casing 38 and by properly machining the abutting surfaces of projection 32 and casing 38 these parts may be properly aligned and the casing 38 may be rigidly connected to projection 32, as for instance by bolts 39.

The wall of casing 38 remote from projection 32 is formed with a sleeve 40 constituting a bearing for the end of shaft 16, a bushing 41, preferably of some composition material, 'being inserted between shaft 16 and bearing sleeve 40. Bearing sleeve 40 is in alignment with bearing sleeve 33 formed on projection-'32, and inasmuch as casing 38 is accurately assembled with reference to projection 32 these bearings may be formed in accurate alignment to properly support shaft 16. It will be furthermore noted that shaft bearin s 33 and 40 arein axial alignment with t e shaft of motor 18 so that shaft 16 may be connected to the motor shaft in the manner aforesaid. i

Casing 38, as has been previously mentioned, constitutes a crank vcase and houses the fly wheels 42 carried by shaft 16. The casing 38 is preferably formed with a cylinder like extension 43 constituting the cylinder of a compressor in which is reciprocally mounted a piston 44 operated by connecting rod 45 connected to a cam portion of shaft 16. A. reciprocal sleeve valve 46 is associated with the compressor and controlled by suit- -able operating arm 47 also connected to a cam portion of shaft 16. The upper end of t-he compressor communicates with Ithe upper end of the radiator by suitable conduit 48.

Casing 38 is adapted tol contain a supply o fy lubricant which will be splashed or thrown upwardly by ily wheels 42 for feeding the same to a suitable lubricating system for the apparatus. In order to make the interior of the casing 38 accessible the lower wall thereof 1s formed with a threaded aperture 49, this The plug is preferably formed with an irregular shaped socket which may be engaged by alsuitable tool for inserting or removing the p ug. i

The mode of operation of the device .will be readily understood. After the refrigerant is compressed in the cylinder 44 it is introduced in to the radiator 11 through the conduit 48 where it is condensed and passed through the conduit 25 to the usual expansion coils (not shown), which are usually placed in a chamber to be refrigerated. After absorbing the heat in the chamber the refrigerant is conveyed back to the compressor and the cycle repeated.

From the foregoing it will be readily apparent that the herein described construction offers means for mounting the parts of the apparatus whereby al compact assembly results. Furthermore the assembling of the apparatus is facilitated as the parts may be quickly attached and easily aligned. We propose casting base 10 whereby this portion of the apparatus may be cheaply and easily manufactured, and by merely machining the engaging parts of projection 32 and casing 38 these parts ymay be properly united and aligned to correctly support the crank shaft. The provision of header 23 not only eliminates the necessity for providing a separate lower header for' the radiator but affords means for mount-ing and properly spacing the radiator with reference to the remaining structure. Furthermore projection 32 which in turn supports casing 38 constitutes in part a support for the compressor which in the illustrative embodiment herein shown is formed in an extension of casing 38.

While the invention has been shown and described herein in some detail, it will be readily apparent that various modifications in the specific structure illustrated may be resorted to without departing from the vspirit and scope ofthe invention and to this end reservation is made to make such changes as may come within the purview of the accompanying claims. Y

What we claim as our invention is:

1. In a refrigerating apparatus including a radiator, a motor and a crank shaft, the combination therewith of a base formed with a support for said motor, a hollow portion constituting a header for said radiator and an upwardly extending projection, a casing secured to said projection, and bearings lamas@ formed in said projection and 'casing for securing said crank Shaft, said bearingsv being aligned with the shaft of Said motor.

2. In a refrigerating apparatus including a 5 condenser, a motor and a crank shaft, the

combination With a cast base formed with a Support for said motor, a port-ion constituting a header for said condenser, andv a projection forming a bearing for said crank shaft.

In testimony whereof We aiiix our sig- 

